T-45A UJPT & E2-C2 INav-03
Use and Operation of TACAN, VOR, VOR/DME
B. Tuning/identifying
1. Correct information 2.7.5.1.1.1.2
a. Find channel on approach plates/charts
b. Verify TACAN control panel is on, and volume is turned all the
way up. Select channel on TACAN control panel.
c.
Select TACAN on communication control panel to route
Fig 8: HSI Display/
TACAN identification signal to your headset
TACAN Operation
d. Verify 3-letter Morse code identifier of selected station
C. HSI indications
1. No. 2 pointer indicates magnetic bearing to station
2. Range counter displays distance
3. Red NAV flag not in view
4. TO or FROM displayed
5. CDI indicates deviation from selected course
D. Erroneous information
1. Cone of confusion 2.7.5.1.1.2.3
a. HSI
(1) No. 2 pointer hunts or rotates
(2) CDI oscillates from side to side
(3) TO/FROM indicator shifts back and forth
(4) Red NAV flag in view
b. DME and identifier signal not affected
2. TACAN azimuth error lock-on in locking multiples of 40-degrees
from the desired azimuth. Solid-state electronics in the T-45A
should preclude this problem from occurring. 2.7.4.2.1
3. Co-channel interference: receiving signals (DME, azimuth,
identifier) from more than one TACAN station due to the
relationship at high altitude between the aircraft and station
locations
(6-99) Original
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